Neal Casal, the prolific Americana guitarist known best for his work in Ryan Adams & The Cardinals and Chris Robinson Brotherhood, has died at the age of 50.

“It’s with great sadness that we tell you our brother Neal Casal has passed away. As so many of you know, Neal was a gentle, introspective, deeply soulful human being who lived his life through artistry and kindness. His family, friends and fans will always remember him for the light that he brought to the world. Rest easy Neal, we love you.”

A cause of death was not immediately disclosed.

Between 2005 and 2009, Casal was a member of Adams’ backing band, The Cardinals, with whom he recorded three studio albums: Easy Tiger, Cardinology, and III/IV. Following Adams’ departure from The Cardinals, Casal joined former Black Crowes singer Chris Robinson in a new band called Chris Robinson Brotherhood. Casal appeared on all six of the Brotherhood’s studio albums, beginning with 2012’s Big Moon Ritual through this year’s Servants of the Sun, and remained an active member of the band up until his death.

Over the years, Casal also collaborated with the likes of Phil Lesh, Willie Nelson, Lucinda Williams, and Cass McCombs, among others.

It’s with great sadness that we tell you Neal Casal has passed. As so many know, Neal was a gentle, soulful human who lived life through artistry & kindness. His family, friends & fans will always remember the light that he brought to the world. Rest easy Neal, we love you. pic.twitter.com/Q0ap7jrkUC